Malicious PDF — malware analysis report

Static analysis result for SHA-256 38c881535a0a77e7…

MALICIOUS

PDF

43.8 KB Created: 2020-08-14 17:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f1e02ab13944d6028933680aafc468d SHA-1: 137897b6b3eb115bec630d7775ffb38aefd07504 SHA-256: 38c881535a0a77e7dd0bcb3f0eab13e64add9c428508d841bbbaf26ba64882d3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=boating+marine+lakes+apk'. The document body also contains this URL and a link to a PDF hosted on Shopify, suggesting a lure to download potentially malicious content.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=boating+marine+lakes+apk
    • http://files.stevensonpto.com/uploads/1/3/0/7/130776327/logobov.pdf
    • http://files.mauriceshapero.com/uploads/1/3/2/6/132681201/jobov.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mevadijuxirefasu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0505/8976/files/91710225869.pdf
    • https://cdn.shopify.com/s/files/1/0434/4951/6199/files/advantage_max_3_bula.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/jeturirisubatavedexakez.pdf
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/sujosofavotodilogobu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5962/6655/files/circulatory_system_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0438/7789/2251/files/cub_scout_knots.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/mazasalekisupivujimesuzap.pdf
    • https://cdn.shopify.com/s/files/1/0432/7813/9556/files/lesson_plan_about_adjectives.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/pimajoforo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/applied_psychology_in_human_resource_management_cascio.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b65.bin
5f701f5b87846900626fe4fa3364394c15adf0ce733299c35b54cce6f69a9ea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B65 5252 bytes
font_01_sfnt_off00007d29.bin
2dae1c8bdc9d8cb13fe11e223ea6e662671366bf265325e124f67f159414b707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D29 10968 bytes

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